Package technology and trends of surface acoustic wave devices 聲表面波器件的封裝技術(shù)及其發(fā)展
Surface acoustic wave device 聲表面波器件
This paper emphasizes on surface acoustic wave ( saw ) devices used in spread spectrum communication system 本文重點(diǎn)介紹了聲表面波器件在擴(kuò)頻通訊系統(tǒng)中的應(yīng)用。
Traditionally , zno is used as acoustic wave devices ( saw ) , bulk acoustic devices ( baw ) , gas sensors , varistors , transparent electrodes , and so on 傳統(tǒng)上, zno薄膜被廣泛應(yīng)用于聲表面波器件、體聲波器件、氣敏傳感器、壓敏電阻、透明導(dǎo)電電極等領(lǐng)域。
Furthermore , zno has properties of piezoelectricity and photoelectricity , so it can be applied as surface acoustic wave sensor , piezoelectric resistance and detection materials et al 此外zno具有優(yōu)異的壓電和光電性能,可以被用作聲表面波器件、壓敏電阻和探測(cè)材料等。
Through importing advanced technology and equipments from usa , japan and europe , we built up the first world advanced smd saw filter product line in china 公司引進(jìn)美國(guó)、日本、德國(guó)及瑞士的先進(jìn)技術(shù)和設(shè)備,建立了我國(guó)第一條具有國(guó)際先進(jìn)水平的片式( smd )聲表面波器件生產(chǎn)線(xiàn)。
Then , focus on several methods to simulate the saw devices , including the saw filter , saw programmable tapped delay line which can be used various modulation including bpsk , msk , qpsk , resonator with saw delay line structure 然后重點(diǎn)介紹聲表面波器件,包括聲表面波濾波器和聲表面波抽頭延遲線(xiàn)的各種設(shè)計(jì)和分析方法。側(cè)重介紹了準(zhǔn)靜態(tài)分析法,并編制了采用該方法分析濾波器的程序,實(shí)際制作的濾波器和設(shè)計(jì)仿真結(jié)果能很好吻合。
Zno is a ii - vi semiconductor material with wide band - gap , which has hexagonal wurtzite structure . zno thin films were widely applied in solar cell , uv detector , saw device , gas sensor and transparent electrodes et al for their excellent properties 氧化鋅( zno )是一種具有六方纖鋅礦晶體結(jié)構(gòu)的寬禁帶ii - vi族半導(dǎo)體材料,由于其優(yōu)良的特性,在太陽(yáng)能電池、紫外探測(cè)器、聲表面波器件、氣敏傳感器、透明電極等方面得到了廣泛的應(yīng)用。
Aln is an important compound semiconductor material with wide band - gap , which has wurtzite structure too . because of their many excellent physical properties , aln thin films were applied in blue - uv emitting materials , epitaxy buffer layer , soi material and saw device with ghz band Aln具有許多優(yōu)異的物理性能,在藍(lán)光、紫外發(fā)光材料及熱釋電材料、外延過(guò)渡層、 soi材料的絕緣埋層和ghz級(jí)聲表面波器件等方面有著重要的應(yīng)用。
Traditionally , zno is used as surface acoustic wave devices ( saw ) , bulk acoustic devices ( baw ) , gas sensors , varistors , transparent electrodes , uv - detectors , and etc . in recent years , zno has gained more and more attention as a wide band semiconductor 傳統(tǒng)上, zno薄膜被廣泛應(yīng)用于聲表面波器件、體聲波器件、氣敏傳感器、壓敏電阻、透明電極、紫外探測(cè)器等領(lǐng)域。近年來(lái), zno作為寬禁帶半導(dǎo)體光電材料的研究越來(lái)越受到人們的重視。